Method for cache replacement of web documents
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United States of America Patent
Stats
-
Apr 8, 2003
Grant Date -
Dec 5, 2002
app pub date -
May 29, 2001
filing date -
May 29, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method for determining the priority of documents in a web cache. The present invention incorporates the document size and the frequency of file access in determining which documents to keep in the cache and which documents to replace. The priority of a document is determined using a ratio of the frequency of access of the document raised to a first value to the size of the document raised to a second value, wherein the first value and the second value are rational numbers other than one. In one embodiment, the first value is greater than one and the second value is less than one. In another embodiment, the age of the document is also considered in determining the priority of a document. In the present embodiment, the ratio is added to a clock value, wherein the clock value is a running counter associated with the document starting at the time the document was first stored in the web cache.
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